Weekend mail call:Mark from Palm Harbor, Fla., wants to know if I think the 49ers should trade running back LaMichael James to the Eagles so he can reunite with his coach at Oregon, Chip Kelly.Bill Williamson: I suggested James be dealt to the Eagles in October. I still believe it. James, a second-round pick in 2012, did make an impact as a returner in the second half of the season. But he didn't make much of an impact as a running back in 2013.